Difference between revisions of "Field Guide/Birds/Buteo jamaicensis"

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</table>
 
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<tr><th align="center" bgcolor="pink">'''[[Binomial nomenclature|Binomial name]]'''</th></tr>
 
<tr><th align="center" bgcolor="pink">'''[[Binomial nomenclature|Binomial name]]'''</th></tr>
<tr><th align="center">''Buteo jamaicensis''</th></tr>
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<tr><th align="center">''Buteo jamaicensis''<br><small>([[Johann Friedrich Gmelin|Gmelin]], [[1788]])</small></th></tr>
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The '''Red-tailed Hawk''', ''Buteo jamaicensis'', is a large [[North America]]n [[Buzzard|hawk]].
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Like most members of the [[genus]] ''[[Buteo]]'', red-tails have long, broad wings and broad but not very long tails. Birds of this species have a dark mark along the leading edge of the underwing, between the body and the wrist (the [[patagium]]). Most but not all color variations have a dark band across the belly. In most, adults' tails above are rusty red and juveniles' have narrow brown and pale bands. The main western population has bands on the adults' rusty tails as well and has varied plumage, organized into three main colour types or [[Polymorphism (biology)|morphs]].
  
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* Light-morph birds are mainly brown on the upperparts and very pale brown or buff on the underparts and underwings; they show a belly band.
The '''Red-tailed Hawk''', ''Buteo jamaicensis'', is a large [[Buzzard|hawk]].
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* Rufous-morph birds are darker and redder, with reddish-brown rather than white on the underparts.  The belly band may be barely visible.
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* Dark-morph birds are very dark brown on both upperparts and underparts; they have lighter parts on the underwings.
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Almost all of the main eastern population are light-morph, with whiter underparts and paler markings than western birds and with solid rust-red tails as adults.
  
Adults have a dark mark on the underwing, between the body and the wrist (the [[patagium]]). They have broad wings; some but not all colour variations have a red tail and a dark band across the belly. Eastern birds have a dark red tail; there are two main colour variations:
 
* Light morph birds are mainly brown on the upperparts and white on the underparts and underwings; they show a belly band.
 
* Dark morph birds are very dark brown on both upperparts and underparts; they have lighter parts on the underwings.
 
 
Other variations are:
 
Other variations are:
* '''Harlan's Hawk''' has very dark plumage; the tail may be reddish or grey. It is found in the west from [[Alaska]] to [[Texas]].
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* '''Harlan's Hawk''' usually has blackish plumage contrasting with white undersides of the flight feathers; the tail may be reddish or grey and is longitudinally streaked rather than barred. It breeds in [[Alaska]] and northwestern [[Canada]] and winters from [[Nebraska]] and [[Iowa]] to [[Texas]] and northern [[Louisiana]]. It is sometimes considered a separate species, ''Buteo harlani''.
* '''Krider's Hawk''' is paler on the head than the eastern birds; the tail may be pinkish or white. It is mainly found in the central [[prairie]]s.
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* '''Krider's Hawk''' is paler than other red-tails, especially on the head; the tail may be pinkish or white. It is mainly found in the central [[prairie]]s.
  
Their breeding habitat is open country with high perches across most of [[North America]]. They build a stick nest in a large tree, cactus or on a cliff edge; they may also nest on man-made structures.
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Their breeding habitat is open country with high perches across most of [[North America]] south to [[Panama]]. They build a stick nest in a large tree, in a [[cactus]], or on a cliff ledge; they may also nest on man-made structures.
  
 
In most of the [[United States]], Red-tailed Hawks are permanent residents. Northern birds [[bird migration|migrate]] further south.
 
In most of the [[United States]], Red-tailed Hawks are permanent residents. Northern birds [[bird migration|migrate]] further south.
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<small>
Red-tailed Hawk, light morph, in soaring flight<br>
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Red-tailed Hawk, light morph, in gliding flight<br>
 
Northern California coast, March
 
Northern California coast, March
 
</small>
 
</small>
 
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</table>
  
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These birds wait on a high perch and swoop down on prey; they may also patrol open areas in flight. They mainly eat small [[mammal]]s, [[bird]]s and [[reptile]]s.
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In flight, these birds soar with wings in a slight [[dihedral]], flapping as little as possible. They sometimes hover on beating wings and sometimes "kite", or remain stationary above the ground by soaring into the wind.
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The Red-tailed Hawk is common and widespread, partly because it has benefited from European settlement.  The clearing of trees in the east provided hunting areas, and the practice of sparing woodlots left nest sites. Conversely, the planting of trees in the west provided nest sites where there had been none. The construction of highways with treeless medians and shoulders and with utility poles alongside provided perfect habitat for perch-hunting, so Red-tailed Hawks are now a common sight along highways. Finally, these birds have moved into [[New York City|New York]] and other cities, as in the successful non-fiction book ''Red-Tails in Love: A Wildlife Drama in Central Park'', by [[Marie Winn]]. Winn wrote about one of the most famous of them, [[Pale Male]].
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<tr><td>[[Image:Redtailedhawkap.jpg|350px|Red-tailed Hawk]]</td></tr>
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<small>
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Red-tailed Hawk, juvenile eastern race</small>
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</table>
These birds wait on a high perch and swoop down on prey; they may also patrol open areas. They mainly eat small mammals, birds and reptiles.
 
  
In flight, these birds soar with wings in a slight [[dihedral]], flapping as little as possible.
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[[Category:Birds of prey]]

Revision as of 18:06, 8 February 2005

Red-tailed Hawk
Photo: Hawk
Scientific Classification
Template:Regnum:Animalia
Template:Phylum:Chordata
Template:Classis:Aves
Template:Ordo: Falconiformes
Template:Familia:Accipitridae
Template:Genus:Buteo
Template:Species:jamaicensis
Binomial name
Buteo jamaicensis
(Gmelin, 1788)

The Red-tailed Hawk, Buteo jamaicensis, is a large North American hawk.

Like most members of the genus Buteo, red-tails have long, broad wings and broad but not very long tails. Birds of this species have a dark mark along the leading edge of the underwing, between the body and the wrist (the patagium). Most but not all color variations have a dark band across the belly. In most, adults' tails above are rusty red and juveniles' have narrow brown and pale bands. The main western population has bands on the adults' rusty tails as well and has varied plumage, organized into three main colour types or morphs.

  • Light-morph birds are mainly brown on the upperparts and very pale brown or buff on the underparts and underwings; they show a belly band.
  • Rufous-morph birds are darker and redder, with reddish-brown rather than white on the underparts. The belly band may be barely visible.
  • Dark-morph birds are very dark brown on both upperparts and underparts; they have lighter parts on the underwings.

Almost all of the main eastern population are light-morph, with whiter underparts and paler markings than western birds and with solid rust-red tails as adults.

Other variations are:

  • Harlan's Hawk usually has blackish plumage contrasting with white undersides of the flight feathers; the tail may be reddish or grey and is longitudinally streaked rather than barred. It breeds in Alaska and northwestern Canada and winters from Nebraska and Iowa to Texas and northern Louisiana. It is sometimes considered a separate species, Buteo harlani.
  • Krider's Hawk is paler than other red-tails, especially on the head; the tail may be pinkish or white. It is mainly found in the central prairies.

Their breeding habitat is open country with high perches across most of North America south to Panama. They build a stick nest in a large tree, in a cactus, or on a cliff ledge; they may also nest on man-made structures.

In most of the United States, Red-tailed Hawks are permanent residents. Northern birds migrate further south.

Red-tailed Hawk soaring

Red-tailed Hawk, light morph, in gliding flight
Northern California coast, March

These birds wait on a high perch and swoop down on prey; they may also patrol open areas in flight. They mainly eat small mammals, birds and reptiles.

In flight, these birds soar with wings in a slight dihedral, flapping as little as possible. They sometimes hover on beating wings and sometimes "kite", or remain stationary above the ground by soaring into the wind.

The Red-tailed Hawk is common and widespread, partly because it has benefited from European settlement. The clearing of trees in the east provided hunting areas, and the practice of sparing woodlots left nest sites. Conversely, the planting of trees in the west provided nest sites where there had been none. The construction of highways with treeless medians and shoulders and with utility poles alongside provided perfect habitat for perch-hunting, so Red-tailed Hawks are now a common sight along highways. Finally, these birds have moved into New York and other cities, as in the successful non-fiction book Red-Tails in Love: A Wildlife Drama in Central Park, by Marie Winn. Winn wrote about one of the most famous of them, Pale Male.

Red-tailed Hawk

Red-tailed Hawk, juvenile eastern race